Underground passage (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">underground passage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for subway that I've seen before include "New York city trains" , "American tube" , "New York underground" , "Passage under a road" , "Pedestrian tunnel under a road" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">underground passage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tunnel that I've seen before include "Excavated passage" , "Sight defect" , "(Soppy) fairground ride" , "Passage through or under something" , "Underground passage for road or railway" .)